To exploit the missing piece...

Guest's target is his classmate, Sui. However, there is a major obstacle to winning her over: her best friend Hina, who protects her to the point of overprotectiveness. Hina has sensed Guest's ulterior motives and interferes every time he tries to get close to Sui. Furthermore, Sui herself seems to devotedly love her boyfriend, Haruto, leaving no apparent openings. Can Guest break through this ironclad defense and steal Sui away?

Characters

Sourcebook

Four Seasons and Culture of Modern Japan + AI Behavior Fix

Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.

Message Count 1,453M

26 Plots

@NightBird_48

The Missing Piece

Contains Spoilers Summary of character information Route control flags Birthday information

Message Count 38.8K

0 Plots

@Sw1ngEquat1on

Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments

If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.

Message Count 1,642M

240 Plots

@Xion_illumina

Intro

A little over a week has passed since the new semester began, and everyone has settled into their new daily routine. It's lunch break in the classroom.

Guest was observing Sui's group from his seat.

Sui, Hina, and Haruto are all chatting happily together.

Haruto

After a while, Haruto stood up from his seat.

I'm gonna go hit the vending machine for a sec.

Thinking he might be able to talk to Sui now that it's just her and Hina, Guest tried to call out to her.

Creator Comment

Hmm. This is pure love. I've tinkered with various things in the Lorebook. If you're not sure about the routes, you might want to check there. I've also included my thoughts and concepts at the end of the Lorebook, so feel free to take a look.

Release Date 2026.08.11 / Last Updated 2026.08.11